Apparatus for winding wire around terminals



Dec. 6, 1960 Filed Dec. 20, 1957 w. P. SHAW ET AL 2,963,051

APPARATUS FOR WINDING WIRE AROUND TERMINALS 6 She ets-Sheet 1 INVENTORSWwbterl? J'lzww M Robert L. Jm iqe BY/JW/ ATTORNEYS 1960 w. P. SHAW ErAL2,963,051

APPARATUS FOR WINDING WIRE AROUND TERMINALS Filed D60. 20, 1957 6Sheets-Sheet 2 INVENTORS 'WaZZ'erP. Slum! afl Raberfil. Jzugqe BY I 7?ATTORNEYS Dgc. 6, 1960 w. P. SHAW EI'AL APPARATUS FOR WINDING WIREAROUND TERMINALS Filed Dec. 20, 1957 6 Sheets-Sheet 3 ATTORNEYS Dec; 6,1960 w. P. SHAW ETAL APPARATUS FOR WINDING WIRE AROUND TERMINALS FiledDec. 20, 1957 6 Sheets-Sheet 4 INVENTORS WaZter P. Shaw W Robert L. Jmge 2 lg ATTORNEYS Dec. 6, 1960 w. P. SHAW ET AL APPARATUS FOR WINDINGWIRE AROUND TERMINALS Filed Dec. 20, 1957 6 Sheets-Sheet 5 1N VENTORSWwwer P. Shaw a RoberfiL. Jud qe BY/JW I! WRNEYS Dec. 6, 1960 w. P. SHAWETAL APPARATUS FOR WINDING WIRE AROUND TERMINALS Filed Dec. 20, 1957 6Sheets-Sheet 6 INVENTORS A Walter}? Shaw W RpbertLJuQqe BY ,ai m

ATTORNEYS United States Patent APPARATUS FOR WINDING WIRE AROUNDTERMINALS Walter P. Shaw, Wappingers Falls, and Robert L. Judge,

Poughkeepsie, N.Y., assignors to International Business MachinesCorporation, New York, N.Y., a corporation of New York Filed Dec. 20,1957, Ser. No. 704,146

15 Claims. (Cl. 140-93) This invention relates to improvements in anapparatus for winding filaments around binding posts or terminals, andmore particularly to an apparatus for simultaneously winding a pluralityof wires around a plurality of corresponding terminals, one for eachwire, which are stag gered in different planes, and then breaking thewires at the terminals.

In some operations, for example, the making of core matrix planes forelectronic computers, it is necessary to wrap each of a plurality ofwires about a corresponding terminal and these terminals may bestaggered in several ditterent planes. In the past, the operation ofwinding the wires, which are threaded through the magnetic cores f thecore matrix, about terminals projecting from a core frame around theedges of the core matrix'has been a manual operation, and the wires havebeen'wrapped around the terminals by hand and then broken or cutoff atthe terminal.

There are known devices in the nature of a hand drill or the like forwinding or wrapping conductors around terminals. These devices consistof a portable drill-type body having a rotary eccentric which receivesthe wire and then rotates the wire around the terminal to wind the wirethereon. Whilethe known devices for winding conductors around terminalsare apparently suitable for their intended purpose they could not beadapted to the delicate and tedious manual operation of wrapping aplurality of terminals staggered in separate planes, such as theterminals which project from the edges of a core plane frame.

It is therefore an object of this invention to provide an improvedapparatus for simultaneously wrapping a group of wires about a group ofcorresponding terminals which are staggered in different planes.

It is also an object of this invention to provide an apparatus forsimultaneously winding a plurality of conductors about a plurality ofcorresponding terminals and then breaking the conductors at theterminals after a predetermined number of turns of the wire have beenmade on each terminal.

It is an additional object of this invention to provide a device whereinthe conductors are moved in an orbit around the terminals and this orbitis relatively close to the edges of the terminal, thereby providing onlya small projecting end when the wire breaks adjacent the terminal whichend does not project unduly and does not require additional bendingaround the terminal.

With these and other objects in view, the invention contemplates adevice with a pair of jaws having a plurality of wire-receiving tubescarried thereby for receiving a number of wires positioned in a singleplane. The jaws may be separated to move every other wire received2,963,051 Patented Dec. 6, 1960 into a separate plane therebypositioning the wire-receiving tubes and the wires adjacent a group ofstaggered terminals which are to be wrapped. The wire which is insertedthrough the tubes in the jaws is clamped and a slack-forming device maythen be used to form the same amount of slack in each wire. An eccentricmechanism is provided to rotate both jaws in unison and this ,willtranscribe the wire-receiving tubes in an orbit about the terminals. Theterminals are usually rectangular in cross section and the orbittranscribed is an elliptical orbit for the purpose of keeping the bodyof the wire as close to the edge of the terminal as possible. Since thewires have been clamped near their ends, when the predetermined amountof slack has been exhausted and the jaw movement is continued the wirewill break in its orbit near the edge of the terminal.

Other objects and advantages of the invention will be pointed out in thefollowing description and claims and illustrated in the accompanyingdrawings, which disclose, by way of example, the principle of theinvention and the best mode, which has been contemplated, of applyingthat principle.

In the drawings:

Fig. 1 is a top plan view of a preferred embodiment of the devicepositioned adjacent a core matrix frame having terminals on the edgesthereof to be wound.

Fig. 2 is a side elevation view with the core matrix frame and supportassembly shown partly in section.

Fig. 3 is a sectional front elevation view taken along Fig. 8 is afragmentary sectional view taken along line 8-8 of Fig. 4.

Fig. 9 is a schematic perspective view showing the orbit of each of thewires around the body of the adjacent terminals.

Referring to the drawings, reference numeral 10 represents thewire-wrapping apparatus as a whole. The apparatus is adapted to receivea plurality of wires or conductors 12 which are positioned in a singleplane and wrap or Wind these wires around a plurality of terminalsstaggered in two different planes. As shown in Fig. 8, the terminals 14of the upper row and the terminals 15 of the lower row are alternatelystaggered.

The wires or conductors 12 may pass through a core matrix plane 16. Thiscore matrix plane is of a type.

used in electronic computers and has a plurality of annular magneticcores 18 positioned as shown in Fig. l and Fig. 2 in a core-supportingassembly 20. For a more detailed description of the core matrix plane,the

core-supporting assembly, and the threading of the cores,

reference may be had to the copending application en-.

titled Perforated Article Threading Device, Serial No. 613,985, filedOctober 4, 1956, and assigned to the assigned to the assignee of thisinvention.

As fully shown and described in the application referred to above, themagnetic cores 18 are supported in a fixture or supporting assembly 20and the wires 12,

which may be contained in tubular needles (not shown in thisapplication) are threaded therethrough. These wires are terminated ateach edge of the core plane by winding them around terminals projectingfrom a core plane frame 22. Until the advent of applicants inventionthis step of winding the wires around the terminals in the core planeframe constituted a manual operation. The instant invention provides ameans for automating this manual operation and, as such, embodies anapparatus which is attached to the core-supporting assembly 20 adjacentthe core frame 22 to receive the wires 12 and to then wind the wiresabout the terminals 14 and 15 which are staggered in separate planes andwhich project from the edge of the frame 22. The core plane frame 22contains V-shaped grooves 24 on its top surface and these grooves arepositioned in the line of each wire 12 as it is threaded through thecore matrix.

Supporting means 26 for the wire-wrapping apparatus are provided infixed relationship to the core plane frame 22, Fig. 2. The supportingmeans 26 includes a. pro jecting member 28 secured to thecore-supporting assembly by screw means 30. A pair of upright supports32, Fig. 3, are attached to each side of member 28 by suitable screws 36extending through slots 34 in members 32. These slots extend in avertical direction so that the members 32 and consequently the entirewirewrapping apparatus may be vertically positioned to place thewire-receiving portions of the apparatus adjacent the grooves 24 wherethe wires 12 will be received.

An elongated journal block 37 is rigidly secured to the uprights 32 bysuitable screws 39. Slidably movable on a face of the journal block 37is an inner movable plate 38 having projections 40 on the face thereofadjacent block 37. The projections cooperate with grooves 41 such thatplate 38 may move relative to fixed journal block 37 in a verticaldirection. Attached to the outer face of plate 38 is an outer plate 42and this plate has horizontal projections 43 on the inner face thereofcooperating with horizontal slots 44 in the outer face of plate 38. Thehorizontal projection and slot arrangement allows the outer plate 42 tomove in the horizontal direction relative to plate 38 and this movementmay be superimposed upon the movement of inner plate 38 in a verticaldirection.

A crank shaft 46 is rotatably journaled in block 37 and has twoeccentric portions 48 and 49 adjacent the end thereof. An end plate 50secured by screw 51 to the end of the crank shaft and a collar 52secured by suitable set screws 53 prevent the crank shaft from movingaxially in the journal block. The crank shaft 46 may be turned by meansof a suitable handle 54 which is rigidly secured to the other end of theshaft by handle set screws 55. Inner plate member 38 has a generallyhorizontal elongated slot 56 therein and outer plate member 42 has agenerally vertical elongated slot 58 therein, Figs. 5 and 6. A suitableantifriction bearing 60 is provided on the eccentric portion 49 of thecrank shaft and fits within slot 56, and a similar bearing 62 oneccentric portion 48 of the crank shaft cooperates with the edges ofslot 58. The arrangement including the two outer plates 38 and 42 andthe slots 56 and 58 for journaling the bearings 60 and 62 attached tothe eccentric portions 48 and 49 of the crank shaft 46 allows the outermember 42 to be transcribed in an elliptical orbit. As the crank shaft46 is rotated the eccentric portion 48 of the crank shaft causes thebearing 60 to bear against the edges of the slot 56 and move the plate38 in a vertical direction. Superimposed upon this reciprocatingvertical movement of plate 38 is a reciprocating horizontal movement ofplate 42. This is caused by the rotating eccentric portion 49 of crankshaft 46 which causes bearing 62 riding in slot 58 to move member 42back and forth in a horizontal direction. Since member 42 is attached tomember 38 this horizontal movement will be superimposed upon a verticalmovement and the distance of these two movements will be equal to themajor and minor axes of an ellipse. The two eccentrics and theircooperating parts provide an elliptical motion of plate 42.

A wire-wrapping device having wire-receiving means may be moved in anelliptical orbit, to wrap the wires around the terminals, because it iscarried by the orbitally movable plate 42. This plate has upperextensions 64 which carry an upper jaw 66 of the wire-wrapping devicerigidly secured thereto by suitable screw means 67, Fig. 4. A lower jaw68 is carried by the upper jaw 66 and is attached thereto by means ofscrews 70. Springs 72 are positioned around the body of the screws 70and provide a bias to continuously urge the lower jaw into engagementwith the upper jaw. The lower jaw may be separated from the upper jawagainst the bias of the springs by a pair of separating cams 74 pivotedat 75 in the upper jaw 66 and having handles 76. In moving these handlesfrom a vertical to a horizontal position as shown in Fig. 3, the camportions 74 act upon the top surface of the lower jaw 68 to force thisjaw downwardly against the bias of spring 72. The jaws 66 and 68 eachhave a plurality of spaced teeth 78 and 80, respectively, thereon. Theseteeth are positioned to intermesh when the jaws are closed and thehandles 76 of the separating cams are in a vertical position. Each tooth78 on upper jaw 66 carries a wire-receiving tube 82 having a flared endand each tooth 80 on the lower jaw 68 also carries a similar tube 84.These tubes provide the means for receiving the threading needles (notshown) and the wires 12 after the wires are threaded through the corematrix. When the jaws 66 and 68 are closed and their teeth intermeshed,the wire-receiving tubes 82 and 84 will all be positioned in a singleplane and this plane may be adjusted to coincide with the plane of thewires 12; therefore, when the jaws are closed the wire-receiving tubesare in a position to receive the wires to be wound or wrapped around theterminals 14 and 15.

In moving the handles 76 from a vertical to a horiz'ontal position, theseparating cam 74 separates the jaws and moves the wires in tubes 84 toa position in a plane adjacent the terminals 15 while the wires in tubes82 remain adjacent terminals 14.

The wire-receiving tubes 82 and 84 will move with the same motion asplate 42, as the jaws are attached through inter-connections to thisplate, therefore, since plate 42 transcribes a small elliptical orbit,the ends of tubes 82 and 84 will also transcribe an identical ellipticalorbit 124. See Figs. 8 and 9.

After the wires 12 are fed or threaded through'the wire-receiving tubes82 and 84 they may be rigidly clamped by a suitable clamping device 86,Fig. 4. This clamping device consists of a lower clamp portion 88 havingrubber 89 on the clamping surface thereof, and an upper clamp portion 90also having rubber 91 on the clamping surface. A pair of side members 93are secured by suitable screws 95 to the lower clamping portion 88 andthe upper extension 64 on plate 42. The upper movable clamping portion90 is actuated by a clamping shaft 92 having a handle 94 thereon. Thecentral portion of this shaft is eccentric at 96 to the end portions 97which are journaled in elongated horizontal slots 98 in the side members93 to allow the shaft 92 to move in a horizontal direction when theeccentric portion is actuating the clamp, Fig. 7. The clamping shaft 92is connected to the upper clamping portion 90 by a pair of connectingextensions 100 which surround the eccentric portion 96 of the shaft. Theupper clamping portion 90 is guided along projections extending inwardlyfrom the side members 93 by four guide plates 104 which are attached tothe clamping portion 90 by screws 102. Due to the eccentricity 96 of theshaft 92, as the handle 94 is moved the upper clamping member 90 will bemoved vertically to clamp or unclamp any wires extending between therubber portions 89 and 91 as shown in Fig. 4.

slide-bearing portion 115 of a top plate 117. Each top plate is suitablysecured by screws 119 to the side members 93 and extending portions 64of movable plate 42. Springs 118 are positioned around the uprightguides 114 to bias the slack-forming bar upwardly to a nonuse position.Joining the two guides at the top is a top handle connection 116, shownin Fig. 3.' A stop portion 120.

which is an extension of the lower clamping portion 88 functions as astop for adjustable set screws 122 threaded into slack-forming bar 108and extending from the lower edge thereof. As the bar 108 is pusheddownwardly, each wire 12 fits within a corresponding slot 110 or 112depending on whether the wire was received through tube 82 in the upperjaw 66 or tube 84 in the lower jaw 68. This is shown in Fig. 4 and itwill be seen that the difference in the depth of the grooves isnecessary in order to form the same amount of slack in each of the wiresregardless of which plane it is in. Referring to Fig. 4, the amount ofslack in the upper wire received through tube 82 is equal to the lengthof wire a-j-b-j-cd. The amount of slack formed in the wire receivedthrough the tube 84 in the lower jaw 88 is equal to the length of wirex+y+zw. The purpose of having the same predetermined amount of slack ineach wire is to provide the same number 'of turns around each terminal.Since the amount of slack must be equal, the slots in wire-forming bar108 must be proportioned accordingly. The wires when wound around theterminals will exhaust their slack at the same moment thereby breakingand leaving the same amount of Wire wrapped on the terminals. The amountof slack formed may be adjusted by means of the adjustable stop screws122.

The complete operation of the apparatus of this invention will now bedescribed. The jaws 66 and 68 of the wire-wrapping apparatus 10 areclosed so that the teeththereon will be interrneshed. The device isattached to the core frame supporting assembly 20 and adjusted in avertical position by means of screws 36 extending through slots 34 toplace the ends of the tubes 82 and 84, which are positioned in a singleplane, adjacent the wire-receiving grooves 24 in the core frame 22. Thewire or conductors 12 may be threaded through the cores 18 and thegrooves 24 into thetubes 82 and 84 by means of hollow tubular needles asfully disclosed in aforementioned copending application Serial No.613,985. After the hollow needles carrying the wires are fed to thefront edge of the clamping assembly 86, the wires are fed on through theneedles to a position between the clamping surfaces 89 and 91. Theclamping handle 94 may be rotated downwardly to move the top clampportion 90 downwardly to clamp all of the wires 12. The hollow tubularneedles may then be retracted. Any slack in the wires at this time maybe removed by any suitable means, such as by manipulating the movablecarriage and wire supply reel brakes of the threading device disclosedin aforesaid application Serial No. 613,985. After any slack is removedfrom the wires the wire supply brake may be released to allow the wireto be withdrawn from the supply reels in equal amounts as Will be expained hereinafter.

'The handles-76 of the jaw separating cams 74 are moved from 'a verticalto a horizontal position to separatethe jaws 66 and 68 and thereforeposition the'tubes 84 of the teeth 80 in the lower jaw 68 adjacent theterminals in the lower row or plane of terminals. The next step in theoperation is that of forming the slack in the wires 12 by means of theslack-forming device 106. This is accomplished by pushing down on handleconnection 116 to move the slack-forming bar 108 downwardly untilstopcation Serial No. 613,985. The handle 54 of the crank shaft 46 maythen be rotated to cause member 42 and therefore the Wire-receivingtubes 82 and 84 to transcribe a small elliptical orbit 124 about each ofthe terminals 14 and 15. This motion moves the ends of the tubes 82 Yand 84 in the same elliptical orbit about the body of the terminalsthereby carrying the body of the wires 12 about the terminals andwinding the wires 12 on the terminals a predetermined number of turns.See Fig. 9. After the slack has been exhausted, and since both ends ofthe 1 wire are clamped, the wire will break at the terminals.

The purpose of moving the ends of the tubes 82 and 84 in ellipticalorbits is to break the wires as close to the body of the terminal aspossible, and since the body of the terminal is rectangular in crosssection, an elliptical orbit provides a shorter end sticking up from thebody of the terminal than would a circular orbit. However, for aterminal having square cross section a circular orbit would be betteradapted to achieve this result.

The wires break when the tubes continue to move after the slack isdissipated since the tension set up in the wires exceeds their breakingpoint.

Although thev preferred embodiment disclosed above is adapted to bepositioned adjacent a core-supporting assembly on the side thereofopposite the core-threading device disclosed in aforesaid applicationSerial No. 613,-

985, it is within the contemplated scope of this invention toincorporate this wire-winding device in the threading device byutilizing the same principles disclosed here- 1n.

While there has been shown and described the fundamental novel featuresof the invention as applied to a preferred embodiment, it will beunderstood that various omissions and substitutions and changes informing details of the device illustrated and its method of operationmay be made by those skilled in the art without departing from thespirit of the invention. It is the intention, therefore, to be limitedonly as indicated by the spirit and scope of the following claims.

What is claimed is:

1. A wire-wrapping apparatus for wrapping a plurality of conductorsabout a plurality of terminals, said apparatus comrising: afixture-supporting base; a pair of relatively movable jaws attached tosaid base, each of said jaws having a plurality of conductor-receivingopenings therein for receiving Wire from behind each of the terminals;means mounting said jaws for simultaneous ellipitical orbital movementwith respect to said base, whereby conductors received through saidopenings may be Wound around terminals positioned adjacent said jawssuch that the terminals are inside the orbital movement transcribed bythe openings, clamping means mounted on said jaws for clamping theconductors received through said openings, and conductor slack-formingmeans located intermediate said clamping means and said jaws and carriedby said jaws for forming a predetermined amount of slack in theconductors to be wound around the terminals wherebywhen' said slack isexhaustedsaid conductors will break at said terminals. v.

2. A wire-wrapping apparatus for receiving'a gang of wire-receivingmembers mounted thereon and each having 7 a plurality of wire-receivingopenings therein, one of said members being movable relative to theother and in one position i-placing all the wire-receiving openings ofthe members in the plane of the received wires, while in anotherposition placing some of the wire-receiving openings of the members inat least one difierent plane thereby positioning each of saidwire-receiving openings adjacent its corresponding terminal; and furthermeans mounted on said supporting member mounting said wirereceivingmembers for orbital movement as a unit to orbitally move each of saidwire-receiving openings about its corresponding terminals.

3. An apparatus as defined in claim 2 further comprising: clamping meanscarried by said wire-receiving members for clamping the wires receivedthrough said openmgs.

4. An apparatus as defined in claim 3 wherein each of the wire-receivingmembers have a plurality of interspaced intermeshing teeth thereon, saidteeth having tubes therein providing the wire-receiving openings,

5. An apparatus as defined in claim 4 wherein said means mounting saidwire-receiving members for orbital movement, includes a crank shaft witheccentric means thereon for causing elliptical orbital movement, saidshaft being rotatably supported in said supporting member.

6. An apparatus as defined in claim 3 further comprising: slack formingmeans to form a predetermined amount of slack in each of said wiresbetween said openings and said clamping means, whereby when said wiresare wound around said terminals until said slack is exhausted eachterminal will have the same number of turns of wire wound therearound,said slack forming means being positioned between said wire-receivingmembers and said clamping means, and said slack forming means beingcarried by said wire-receiving members.

7. A wire wrapping apparatus for simultaneously wrapping a group ofwires positioned side-by-side in a single plane about a group ofterminals which are staggered in different planes, said apparatuscomprising: a supporting fixture, a pair of wire-receiving jaws carriedby said fiixture, said jaws having a plurality of wire-receivingopenings therein for receiving wires from behind said terminals, one ofsaid jaws being movable with respect to the other from a position withall of said openings in a single plane corresponding to the position ofthe group of wires to another position with all of said openingsadjacent said terminals staggered in ditierent planes; and means mountedon said supporting fixture for simultaneously moving said jaws in anorbit to wrap said wires around said terminals.

8. An apparatus as defined in claim 7 further comprising: a cam andlever operated clamping mechanism for clamping the wires receivedthrough said wire-receiving openings, said clamping mechanism beingcarried by said jaws on the side thereof opposite said terminals.

9. An apparatus as defined in claim 8 wherein said moving means includesa shaft with a hand crank on one end and eccentric means on the shaftcooperating with said wire-receiving jaws for causing said jaws and theopenings therein to transcribe an elliptical orbit.

10. An apparatus as defined in claim 8 further comprising slack formingmeans for selectively forming a desired amount of slack in said wire,said means selectively forming slack in said wires being positionedbetween said clamping mechanism and said wire-receiving openings.

11. An apparatus as defined in claim 10 wherein said slack forming meansincludes a slack forming bar with a plurality of grooves therein, eachof said grooves corresponding to each of said wires and being ofsufiicient depth to provide the same total amount of slack for eachwire.

12. A wire-wrapping apparatus for wrapping a plurality of wires receivedin a single plane about the same number of corresponding terminal-s,alternately staggered in two two wire-receiving jaws movably mounted onsaid supporting member, said jaws having intermeshing teeth and each ofsaid teeth carrying a wire-receiving tube therein positioned such thatsaid tube ends .may be aligned with single line of wires when said teethare meshed; a cam device for moving one of said jaws with respect to theother of said jaws to position said tube ends in two planes and therebyposition the end of each wire-receiving tube adjacent the body of itscorresponding terminal; a handle operated crankshaft journaled in saidsupporting member and having eccentric means thereon operativelyconnected with said jaws to cause said jaws to simultaneously transcribean elliptical orbit to move each of said wire-receiving tubes about itsadjacent corresponding terminal; a cam operated clamp carried by saidjaws for clamping wires receive through said tubes, and a grooved barslack former supported by said jaws between said clamp and said jaws forselectively forming a predetermined amount of slack in each wire suchthat each wire so formed has the same amount of slack regardless ofwhich tube it was received through.

13. An apparatus for receiving a plurality of wires from a single planeadjacent the apparatus and wrapping these wires about a plurality ofprojecting terminals facing the device and staggered in more than oneplane and then breaking the wires at the terminals, said apparatuscomprising; a supporting member, at least two wire-receiving jaws havinga plurality of wire-receiving openings therein, said jaws being movablerelative to each other such that in one position of the jaws, all of thewire-receiving openings thereof are in a single plane while in anotherposition of the jaws, some of the wirereceiving openings are in oneplane while others are in another plane, means mounting the jaws on saidsupporting member for orbital movement as a unit to move each of thewire-receiving openings in an orbit, clamping means positioned behindthe jaws on the side thereof oppos.te the projecting terminals forclamping the wires received through the openings in the jaws, and aslackforming device for selectively forming slack in the con-.

ductors received through the wire-receiving openings, the slack-formingdevice being positioned between the clamping means and thewire-receiving openings of the jaws.

14. A wire-wrapping apparatus for wrapping a plurality of wires receivedin a single plane about the same number of corresponding terminals, theterminals being alternately staggered in two planes, the apparatuscomprising; a supporting base, two wire-receiving jaws movably mountedon the supporting base, the jaws including intermeshing teeth with eachtooth carrying a wire-receiving tube positioned therein such that thetube ends may be aligned with the single plane of wires when the teethare meshed, means for moving one of the jaws with respect to the otherto position the wire-receiving tubes in two planes and thereby positionthe end of each wire-receiving tube adjacent the body of a correspondingstaggered terminal, means journaling said jaws for orbital movement as aunit whereby the end of each of said tubes transcribes an orbit adjacentits corresponding terminal, a clamp positioned behind the jaws on theside thereof opposite said extending tubes, and a slack formerpositioned between the clamp and the jaws for selectively forming apredetermined amount of slack in each wire such that each wire has thesame amount of slack, regardless of which tube it was received throughafter the jaws have been separated.

15. A wire-wrapping device for wrapping a plurality of wires about aplurality of terminals, comprising; a supporting base, wire receivingjaw means adapted to be positioned to face the terminals, said jawshaving a plurality of wire-receiving passages extending therethrough forreceiving wires from behind the terminals, means journalling the jawmeans on the base for movement in an elliptical orbit to transcribe thewire-receiving passages about the terminals, a clamp positioned on theside wound 'on each terminal and the wires will break at the of the jawsopposite the terminals for clamping the wires terminals.

received through the wire receiving passages and a slack iormerpositioned between the clamp and the jlirw mean; References Cited in thefile of this patent or forming a predetermined amount of slac in eac 5wire, whereby when the jaw means are traversed in the UNITED STATESPATENTS elliptical orbit a predetermined number of turns will be2,855,159 Mallina Oct. 7, 1958

